"Toxins. Volatile Organic Compounds. Off-gassing. Ten years ago, these terms made their way into our mainstream vocabulary. And for good reason. People were beginning to realize many materials used to build our homes were toxic and caused adverse health effects. Volatile Organic Compounds or VOCs in carpets and furniture, evaporate and release harmful toxins into the environment, a process that can happen over a period of years after products are initially installed. Because we spend about 90 percent of our time indoors, exposure to chemicals such as formaldehyde can trigger headaches, allergies, respiratory problems, and damage to nerves, the kidney and liver to name only a few symptoms."